Report on the Filtration of River Waters

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Excerpt from Report on the Filtration of River Waters: For the Supply of Cities, as Practised in Europe, Made to the Board of Water Commissioners of the City of St. LouisGentlemen: In obedience to instructions received from the Board of Water Commissioners in December, 1865 (see Appendix), I have visited Europe for the purpose of understanding the modes in practice there for the filtration or clarification on a large scale of river waters, where these are made use of for domestic purposes in the supply of cities.To this end I have visited the cities of Genoa, and Leghorn, in Italy, of Marseilles, Toulouse, Lyons, Tours, Angers, and Nantes in France, of Berlin, Hamburgh, and Altona in North Germany, and of London, Leicester, York, Liverpool, Edinburgh, Perth, and Dublin in Great Britain.I submit herewith statements descriptive of the modes of filtration in use at each of these places.The obtaining of this information has occupied much more time than I had anticipated. In many places it was found impossible to get at all the details and statistics which were desirable, without a larger expenditure of time and money than your instruct ions, however liberally construed, would have warranted. What may be wanting, however, in the description of one place will generally be found in another. No one but the superintendent or engineer of each work, who had watched the process of filtration from year to year, could give minutely all the experience which each place learns for itself. The process, however, unless where the areas were incommensurate with the service, was in England everywhere successful. The conditions were simple, well recognized, and easily understood, and when, as in two instances particularly, they were violated, it was but temporarily - the increase of area required being acknowledged, and being about to be corrected.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.